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Plot a sum of vectors using inline free format or wolframalpha. What is the...
Using Wolframalpha or inline free format you can obtain a nice representation of a sum of vectors. An example is shown below.Whish is the hidden code? (or a code that make the same representation). I...
View ArticleHow to access the data object returned from a Wolfram query?
I want to access information regarding the population of the world, over the last 10,000 years, and then visualize it with some annotations.In particular case, I want to:grab world population data over...
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NSum::nslim: Limit of summation k is not a number. Help, please( [closed]
f[x_] = x^4; a = -1; b = 1; L = 1; gr = Plot[f[x], {x, a, b}, PlotRange -> {{a, b}, {-0.2, 1}}, PlotStyle -> {Hue[0.02], Thickness[0.007]}];a0 = 1/L \!\(\*SubsuperscriptBox[\(\[Integral]\),...
View ArticleEmpty .png figures generated by a function "PlotWithGrid" whereas no problem...
I have an issue about a .wls script that I can't manage to solve for the moment. I execute it with wolframscript interpeter on command line :A function PlotWithGrid has been coded this way...
View ArticleWhy doesn't Mathematica provide an answer while Wolfram|Alpha does,...
Among other series I've been working on, I was asked to find whether$$\sum_n 1-\cos(\frac{\pi}{n})$$converged, and Mathematica's output to SumConvergence[1 - Cos[Pi/n], n] simply was repeating the...
View ArticleStep by step solution of a differential equation - Call Wolfram|Alpha in...
I know that it's possible to get the step by step solution of a differential equation calling Wolfram in Mathematica. For example:WolframAlpha["L*x'+R*x=Sqrt[(sin(t))^2] and x(0)=0", PodStates ->...
View ArticleWolframAlpha XML parsing error
I am using the WolframAlpha command to automated solution sets of homework exercises. Here is an sample usage, although this can happen with many different examples:WolframAlpha["limit (1 +...
View ArticleExporting results containing Entities to JSON?
I am looking for a straightforward way to export results from functions like ImageContents, FacialFeatures, and WolframAlpha - symbols that return stuff containing knowledgebase content.Aside from...
View ArticleComputing expectation with some constants [closed]
I would like to compute the following expression in Wolfram alpha:$$\mathbb{E}[X-max(aX+b,0)] $$where $X\sim N(\mu,\sigma^2)$ and $a,b$ are some constants.Without constants, I can get the result...
View ArticleIs there any hope to get the result faster if we use a supercomputer for the...
If an operation in Mathematica (say, computing the determinant of a $88\times88$ parametric matrix) takes much time to be computed on a personal computer (core i7), say a week, then, is there any hope...
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How to create a new "person curve"?
Wolfram|Alpha has a whole collection¹ of parametric curves that create images of famous people. To see them, enter WolframAlpha["person curve"] into a Mathematica notebook, or person curve into...
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Has FinancialData forgotten how to deliver monthly data?
I seem to get odd results from the following FinancialData code:FinancialData["SP500", "Jan. 1, 1978", "Month"]This gives me a TimeSeries of 11,372 "Daily" data points.I expected to get ~460 "Month"...
View ArticleRun the latest Mathematica version without installing it
Is the solution just running mathematica on wolfram alpha? If so, how can one run a or part of a .nb code on wolfram alpha? I only know how to run a single line of code on it.
View ArticleDisagreement between FindGeoLocation and Alpha: "Where Am I?"
While trying to estimate a user's location in a notebook, I noticed that FindGeoLocation[] was extremely inaccurate. I realize that it uses an IP lookup to make this estimate, but the location it has...
View ArticleShading an area enclosed by a loop
I am plotting the folium of Descartes as a parametric plot, and trying to find the arclength and the area enclosed by the loop. I got both of them covered result-wise, but my professor wants us to...
View ArticleAdding Entities to AirportData[]
Mathematica's AirportData[] is hopelessly outdated.I'm trying to manually add entries for some common ICAO airport codes, such as OTHH (Doha) or FAOR (Johannesburg)store = EntityStore["Airport" ->...
View ArticleStep by Step for Generalized Eigenvectors?
When I do WolframAlpha["Eigensystem[{{1,-3},{3,-5}}]", PodStates -> {"Step-by-step solution"}]It only shows steps for non-generalized eigenvectors.Is there any way to get the step by step from WA...
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Why does Wolfram|Alpha give inconsistent result for $\int_0^\infty...
Why Wolfram gives inconsistent result for :$$I=\int_0^\infty \frac{e^{x-x^2}-e^{-x-x^2}}{x}~dx$$As shown in the picture below, the analytical integration gives $-i\pi$, but numerical integration gives...
View ArticleInteractive steam tables and phase diagrams in Mathematica
I teach an undergraduate course in Thermodynamics and I would love to use Mathematica to demonstrate the various engineering processes that involve the expansions and compressions of steam and common...
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A femme is a wife is a Frau
As can be seen fromLanguageData["Properties"] // MulticolumnMathematica's translation capabilities seem to be very limited. It can translate month names, colors and numbers, but, apparently, not...
View ArticleWolframAlpha::kbserr: Request to knowledgebase server api.wolframalpha.com...
It is all in the title. If I run WolframAlpha["2+2"], Mathematica returns the error WolframAlpha::kbserr: Request to knowledgebase server api.wolframalpha.com failed with error code 503. What is...
View ArticleIs it possible in Mathematica to get a step-by-step evaluation of the following?
Is it possible in Mathematica (or WolframAlpha["...]") to get a step-by-step evaluation of the following? f[n_, x_] := Sum[(-1)^m (n!/(m! (n - 2 m)!)) (2 x)^(n - 2 m), {m, 0, Floor[n/2]}]f[3, x]
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Converting WolframAlpha Output to Markdown
I am calling Wolfram Alpha using WolframScript. That is, I can't display all the beauty that is inserted into Wolfram Mathematica Notebook. Let's say I execute a line like this:result =...
View ArticleIs there an issue with calls to WolframAlpha from Mathematica?
I was trying to use the step by step to get a solution to an integral, but it was failing, so I tried an even simpler example from the Wolfram documentation WolframAlpha["what is the distance to the...
View ArticleWhy does Wolfram|Alpha give a different answer for the derivative of the...
Consider the function $f(x)=\sqrt[3]{x^2}$. To find $f'(x)$, I use the rule $\color{red}{\boxed{\color{black}{\large\big(\sqrt[n]{u^m}\big)'=\frac{mu'}{n\sqrt[n]{u^{n-m}}}}}}$. Therefore $\boxed{\large...
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Recreating map from Wolfram|Alpha with GeoGraphics
I have tried to create a map using GeoGraphics, and I have not been able to get one with the same quality as the result Wolfram|Alpha gave me.WolframAlpha["distance between eeuu and north korea",...
View ArticleWolfram|Alpha is unable to evaluate this improper integral
I want to solve this integral$$\int_{0}^{\frac{\pi}{2}} e^{-(\pi \tan(x) - 1)^2} \, dx$$I tried Wolfram alpha but it is unable to evaluateI tried this codeIntegrate[Exp[-(Pi*Tan[x] - 1)^2], {x, 0,...
View ArticleInitial value problem with Laplace transform
How can I use Mathematica to resolve a Initial value problem involving Laplace-Transform?For example:Solve, using Laplace Transform, the following Initial value problem in [0,+∞]$$ \begin{cases} y'' -...
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Integral of the Poisson Kernal [closed]
I wish to solve the following definite integral:$\int^{b}_a P_r(\theta-\phi) d\phi$,where $P_r(\theta-\phi) = \frac{1-r^2}{1 + r^2 -2r cos(\theta - \phi)}$ is the Poisson kernel. This is something I...
View ArticleProblem to plot GDP data coming from Wolfram Alpha
I'm working with economic data and realized that I could extract it directly from WolframAlpha using _Mathematica.So I did it. I extracted the GDP data of the country I'm studying.nominal =...
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